We have a named instance of SQL Server 2005 SP3 on an active/active cluster. We find that the Dedicated Admin connection (DAC) is not on one consistent port, the port changes whenever we reboot. We want it to be on a consisten port for monitoring. Does anyone have any ideas on how to do this, thanks.

2 Answers
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SQL Server listens for the DAC on TCPport 1434 if available or a TCP port dynamically assigned upon Database Engine startup. The error log contains the port number the DAC is listening on. By default the DAC listener accepts connection on only the local port. For a code sample that activates remote administration connections, see remote admin connections Option.